Visibility of Luna and Lunar Crescent

How.r s noE @nhtlon l !'pNch ir ro @!qt lo€l <bre.rd ar rim ro
uiv.Eal dalc ed time which is ihcd cotrrcncd b rh. ,ulid .!ate dd fmUy th. .fi6r of
dt is taln inio ecoul. Tlc s. lpprorch b u*d in lhe fonowilg atgodrhn foi
c.lcul.tioo of the dn dgme l
Srep-l: l8el Local Doaroh ercgorin Cal.nd@ LZ LMM, LDD
Sr.F2: INrtIBalTin. &7awTih. LHH, LMN, LSEC, ZON
S4 LryY=LIY, UMM-LMM UDD.LDD
UHH= LHH + ZO N, U M I N = LMIN, LIs EC = I.S EC
ln eedeEl rhe only dif.rc.c. bclwen local hne tinc a.d dale ed lhe
Univcsal dme md d.t is th. diff.cn . bel@n hou6 rhat cq@h zon time
(considercd in inresal ho6 hcr). Duc b rhis ditf.rene th. t@al d.rc hd lbe
Univc6d dare mar difLr by onc &d tr.!& .djcthsf.
I[(UHH>=24) ...... 1rcft6. dar
( UDD-LDD+I
tf (UDD>dorqLMM)) //darr is nMber of days in a donrh @y
I
t)]
upHH<o)
LDD=I:
'UMM-LMM+Ii
rf (uMM> t2)
I UMM-|:
UW-LYY+ 1:
... ... d..t @ do,
{ UDD=LDD.!:
{ If(uDD-o)
( UMM.LMM.I
If(UMM-1)
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